Done (gophercises#40)

* done

* Delete vcs.xml

students/inyutin/problems.csv

@@ -0,0 +1,12 @@
+5+5,10
+1+1,2
+8+3,11
+1+2,3
+8+6,14
+3+1,4
+1+4,5
+5+1,6
+2+3,5
+3+3,6
+2+4,6
+5+2,7

students/inyutin/quiz.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"bufio"
+	"encoding/csv"
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"strconv"
+	"time"
+)
+
+type Line struct {
+	Question string
+	Answer   string
+}
+
+var (
+	csvName = flag.String("csv", "problems.csv", "path to csv file with quiz(question,answer)")
+	limit   = flag.Int("limit", 30, "the time limit for the quiz in seconds")
+)
+
+func main() {
+	flag.Parse()
+
+	csvFile, err := os.Open(*csvName)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	defer csvFile.Close()
+
+	csvReader := csv.NewReader(bufio.NewReader(csvFile))
+	var lines []Line
+	for {
+		line, error := csvReader.Read()
+		if error == io.EOF {
+			break
+		} else if error != nil {
+			log.Fatal(error)
+		}
+		lines = append(lines, Line{
+			Question: line[0],
+			Answer:   line[1],
+		})
+	}
+
+	reader := bufio.NewReader(os.Stdin)
+	count := 0
+
+	T := time.Duration(*limit)
+	timer := time.NewTimer(T * time.Second)
+	go func() {
+		<-timer.C
+		fmt.Println()
+		fmt.Println("You scored " + strconv.Itoa(count) + " out of " + strconv.Itoa(len(lines)))
+		os.Exit(0)
+	}()
+
+	for idx, line := range lines {
+		fmt.Print("Question №" + strconv.Itoa(idx+1) + ": " + line.Question + " = ")
+		ans, _ := reader.ReadString('\n')
+		if ans == line.Answer+"\n" {
+			count++
+		}
+	}
+	stop := timer.Stop()
+	if stop {
+		fmt.Println("You scored " + strconv.Itoa(count) + " out of " + strconv.Itoa(len(lines)))
+	}
+}